Zobrazeno 1 - 10
of 445
pro vyhledávání: '"Carlstrom, Johan"'
Publikováno v:
Physica C 533, 20-35 (2017)
In general a superconducting state breaks multiple symmetries and, therefore, is characterized by several different coherence lengths $\xi_i$, $i=1,...,N$. Moreover in multiband material even superconducting states that break only a single symmetry a
Externí odkaz:
http://arxiv.org/abs/1608.02211
Akademický článek
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Publikováno v:
Phys. Rev. B 87, 014507 (2013)
It is shown that under certain conditions, three-component superconductors (and in particular three-band systems) allow stable topological defects different from vortices. We demonstrate the existence of these excitations, characterized by a $CP^2$ t
Externí odkaz:
http://arxiv.org/abs/1211.4342
Publikováno v:
Physical Review B, vol. 84, Issue 13, id. 134518 (2011)
The recent discovery of iron pnictide superconductors has resulted in a rapidly growing interest in multiband models with more than two bands. In this work we specifically focus on the properties of three-band Ginzburg-Landau models which do not have
Externí odkaz:
http://arxiv.org/abs/1107.4279
Publikováno v:
Phys. Rev. Lett. 107, 197001 (2011)
We show that three-band superconductors with broken time reversal symmetry allow magnetic flux-carrying stable topological solitons which have only a slightly higher energy than ordinary vortices. Therefore they can be induced by fluctuations or quen
Externí odkaz:
http://arxiv.org/abs/1107.0995
Publikováno v:
Phys. Rev. B 84, 134515 (2011)
We demonstrate existence of non-pairwise interaction forces between vortices in multicomponent and layered superconducting systems. That is, in contrast to most common models, the interactions in a group of such vortices is not a universal superposit
Externí odkaz:
http://arxiv.org/abs/1101.4599
Publikováno v:
Phys. Rev. B83:174509,2011
In contrast to single-component superconductors, which are described at the level of Ginzburg-Landau theory by a single parameter \kappa and are divided in type-I \kappa<1/\sqrt{2} and type-II \kappa>1/\sqrt{2} classes, two-component systems in gener
Externí odkaz:
http://arxiv.org/abs/1009.2196
Autor:
Babaev, Egor, Carlstrom, Johan
Publikováno v:
Physica C 470 717-721 (2010) proceedings of the Vortex VI conference
In the usual Ginzburg-Landau theory the critical value of the ratio of two fundamental length scales in the thery $\kappa_c=1/\sqrt{2}$ separates regimes of type-I and type-II superconductivity. The latter regime possess thermodynamically stable vort
Externí odkaz:
http://arxiv.org/abs/1007.1965
Publikováno v:
Phys.Rev.Lett.105:067003,2010
We show that in multiband superconductors even small interband proximity effect can lead to a qualitative change in the interaction potential between superconducting vortices by producing long-range intervortex attraction. This type of vortex interac
Externí odkaz:
http://arxiv.org/abs/0910.1607
Akademický článek
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